ActFax and VoIP (Voice over IP)
ActFax can not only be used with traditional analog and ISDN (T1/E1) phone lines, it is also
possible to run ActFax directly through VoIP (Voice over IP) and FoIP (Fax over IP).
When using ActFax with VoIP, no additional hardware (modem, ISDN board, fax board) is required,
because the VoIP implementation is a pure software solution that communicates directly through the network interface of
the fax server computer. An advantage of the missing modem hardware is, that you have no limitations when installing the
fax server on virtual machines.
In case you cannot use or do not want to use Voice over IP, using ActFax in combination with a
Web Fax Provider would be a cost-efficient alternative to VoIP that can be
implemented very easily.
VoIP Interface Software
To run ActFax with VoIP connections, we recommend using the interface software
XCAPI from TE-Systems. XCAPI acts as an
interface between the fax server and the VoIP gateway that covers all operations normally done
by the modem, ISDN board or fax board on an installation with traditional phone lines. XCAPI supports all
important industry standards (SIP, H.323) and fax protocols (Softfax/G.711, T.38). The configuration of XCAPI
on the fax server is identical with the configuration of a normal ISDN board, since ISDN boards and XCAPI are
both based on the CAPI standard.
When sending fax documents through VoIP, the quality of the VoIP connection has great unfluence on the success rate of fax
transmissions. It is recommended to use VoIP gateways supporting the T.38 protocol (Fax over IP), to guarantee failure-free
data exchange between the fax server and the IP gateway. If the T.38 protocol is not supported by the VoIP gateway, a speech channel (G.711
protocol) is used for fax transmissions. In such a case, the success rate of the fax transmissions mainly depends on the quality of the
VoIP connection; this is because run-time of data packets submitted in IP networks is variable. We recommend to contact
your provider to make sure your VoIP connection is compatible with fax transmissions in that case.
Installation on Virtual Machines
Because XCAPI is a pure software solution, there are no restrictions for the installation of the fax server on virtual machines
(i.e. VMware ESX, Citrix XenServer, Hyper-V). The installation is completely hardware independent that way. The communication with
the outside world and the IP gateway is done directly through the network interface of the fax server PC.
XCAPI Licensing
To run ActFax with VoIP, you also need a license for the XCAPI software. This license can be purchased
either directly through us or from TE-Systems. If you would like to purchase the XCAPI license through us, please send us a short email
to
sales@actfax.com with the number of channels you plan to use with the XCAPI license. Because no
additional modem hardware is required when using the XCAPI, the acquisition of the XCAPI license actually has no impact on overall
costs. More information about system requirements, compatibility and licensing of XCAPI can be found on the
XCAPI website.